328445645 has 32 divisors (see below), whose sum is σ = 439084800. Its totient is φ = 233856000.

The previous prime is 328445641. The next prime is 328445657. The reversal of 328445645 is 546544823.

It is not a de Polignac number, because 328445645 - 2² = 328445641 is a prime.

It is a super-3 number, since 3×328445645³ (a number of 27 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (328445641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 940931 + ... + 941279.

It is an arithmetic number, because the mean of its divisors is an integer number (13721400).

Almost surely, 2^328445645 is an apocalyptic number.

It is an amenable number.

328445645 is a deficient number, since it is larger than the sum of its proper divisors (110639155).

328445645 is a wasteful number, since it uses less digits than its factorization.

328445645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677.

The product of its digits is 460800, while the sum is 41.

The square root of 328445645 is about 18123.0694144232. The cubic root of 328445645 is about 689.9556402204.

The spelling of 328445645 in words is "three hundred twenty-eight million, four hundred forty-five thousand, six hundred forty-five".